/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:06:50,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:06:50,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:06:50,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:06:50,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:06:50,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:06:50,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:06:50,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:06:50,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:06:50,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:06:50,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:06:50,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:06:50,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:06:50,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:06:50,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:06:50,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:06:50,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:06:50,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:06:50,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:06:50,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:06:50,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:06:50,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:06:50,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:06:50,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:06:50,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:06:50,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:06:50,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:06:50,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:06:50,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:06:50,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:06:50,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:06:50,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:06:50,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:06:50,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:06:50,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:06:50,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:06:50,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:06:50,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:06:50,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:06:50,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:06:50,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:06:50,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:06:50,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:06:50,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:06:50,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:06:50,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:06:50,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:06:50,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:06:50,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:06:50,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:06:50,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:06:50,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:06:50,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:06:50,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:06:50,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:06:50,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:06:50,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:06:50,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:06:50,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:06:50,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:06:50,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:06:50,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:06:50,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:06:50,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:06:50,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:06:50,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:06:50,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:06:50,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:06:50,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:06:50,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:06:50,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:06:50,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:06:51,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:06:51,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:06:51,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:06:51,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:06:51,420 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:06:51,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_4.c [2020-10-29 04:06:51,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dc6e3836/6fcb48246e154dc79e8560ffca4c8edf/FLAGeebde717b [2020-10-29 04:06:52,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:06:52,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_4.c [2020-10-29 04:06:52,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dc6e3836/6fcb48246e154dc79e8560ffca4c8edf/FLAGeebde717b [2020-10-29 04:06:52,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dc6e3836/6fcb48246e154dc79e8560ffca4c8edf [2020-10-29 04:06:52,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:06:52,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:06:52,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:06:52,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:06:52,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:06:52,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52, skipping insertion in model container [2020-10-29 04:06:52,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:06:52,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:06:52,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:06:52,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:06:52,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:06:52,892 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:06:52,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52 WrapperNode [2020-10-29 04:06:52,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:06:52,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:06:52,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:06:52,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:06:52,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... [2020-10-29 04:06:52,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:06:52,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:06:52,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:06:52,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:06:52,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:06:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:06:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:06:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:06:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:06:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:06:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:06:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:06:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:06:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:06:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:06:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:06:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:06:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:06:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:06:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:06:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:06:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:06:53,555 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:06:53,555 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:06:53,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:06:53 BoogieIcfgContainer [2020-10-29 04:06:53,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:06:53,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:06:53,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:06:53,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:06:53,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:06:52" (1/3) ... [2020-10-29 04:06:53,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea05a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:06:53, skipping insertion in model container [2020-10-29 04:06:53,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:52" (2/3) ... [2020-10-29 04:06:53,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea05a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:06:53, skipping insertion in model container [2020-10-29 04:06:53,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:06:53" (3/3) ... [2020-10-29 04:06:53,571 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_4.c [2020-10-29 04:06:53,586 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:06:53,593 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:06:53,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:06:53,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:06:53,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:06:53,658 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:06:53,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:06:53,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:06:53,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:06:53,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:06:53,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:06:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-29 04:06:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:06:53,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:53,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:53,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1115320526, now seen corresponding path program 1 times [2020-10-29 04:06:53,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:53,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277344749] [2020-10-29 04:06:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:54,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:54,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:06:54,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-29 04:06:54,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:54,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:06:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:06:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:06:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:06:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:54,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:54,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:54,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:54,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:06:54,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:54,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:06:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:06:54,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277344749] [2020-10-29 04:06:54,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:06:54,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 04:06:54,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591992546] [2020-10-29 04:06:54,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:06:54,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:54,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:06:54,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:06:54,966 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-10-29 04:06:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:55,362 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-29 04:06:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:06:55,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-29 04:06:55,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:55,373 INFO L225 Difference]: With dead ends: 64 [2020-10-29 04:06:55,373 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 04:06:55,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:06:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 04:06:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 04:06:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 04:06:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-29 04:06:55,426 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 15 [2020-10-29 04:06:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:55,426 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-29 04:06:55,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:06:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-29 04:06:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:06:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:55,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:55,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:06:55,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash -278712185, now seen corresponding path program 1 times [2020-10-29 04:06:55,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:55,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235823072] [2020-10-29 04:06:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:06:56,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:06:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-29 04:06:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:06:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:06:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:06:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:06:56,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:06:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 04:06:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:56,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:06:56,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:56,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:06:56,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235823072] [2020-10-29 04:06:56,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:56,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:06:56,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113965462] [2020-10-29 04:06:56,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:06:56,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:56,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:06:56,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:06:56,877 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 9 states. [2020-10-29 04:06:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:57,189 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-29 04:06:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:06:57,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-29 04:06:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:57,191 INFO L225 Difference]: With dead ends: 44 [2020-10-29 04:06:57,191 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 04:06:57,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:06:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 04:06:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 04:06:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:06:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-29 04:06:57,203 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 23 [2020-10-29 04:06:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:57,204 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-29 04:06:57,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:06:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-29 04:06:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:06:57,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:57,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:57,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:06:57,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:57,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1340786969, now seen corresponding path program 2 times [2020-10-29 04:06:57,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:57,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885792837] [2020-10-29 04:06:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:01,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:01,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:07:01,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:07:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4000 [2020-10-29 04:07:01,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:01,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:07:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:07:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:07:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:01,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:01,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:01,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:01,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:07:01,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:01,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:07:01,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 04:07:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:01,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:01,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:01,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:01,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:07:01,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:01,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:01,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:01,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 04:07:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:01,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:07:01,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885792837] [2020-10-29 04:07:01,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:01,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:07:01,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60030375] [2020-10-29 04:07:01,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:07:01,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:01,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:07:01,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:01,592 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 10 states. [2020-10-29 04:07:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:01,950 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-29 04:07:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:07:01,951 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-29 04:07:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:01,952 INFO L225 Difference]: With dead ends: 52 [2020-10-29 04:07:01,952 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 04:07:01,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:07:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 04:07:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-29 04:07:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 04:07:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-29 04:07:01,965 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 31 [2020-10-29 04:07:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:01,965 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-29 04:07:01,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:07:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-29 04:07:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 04:07:01,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:01,968 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:01,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:07:01,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:01,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:01,969 INFO L82 PathProgramCache]: Analyzing trace with hash -754262713, now seen corresponding path program 3 times [2020-10-29 04:07:01,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:01,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125452773] [2020-10-29 04:07:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:01,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:06,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:06,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 04:07:06,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:07:06,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:07:06,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:06,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:07:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:07:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:07,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:07,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:07,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:07:07,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:07,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 04:07:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:07:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:07,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 04:07:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:07,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:07,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:07,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:07,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:07:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:07,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:07,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:07,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:07,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:07:07,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125452773] [2020-10-29 04:07:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:07:07,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401066710] [2020-10-29 04:07:07,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:07:07,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:07,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:07:07,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:07,200 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-29 04:07:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:07,413 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2020-10-29 04:07:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:07:07,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-29 04:07:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:07,415 INFO L225 Difference]: With dead ends: 106 [2020-10-29 04:07:07,415 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 04:07:07,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:07:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 04:07:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-29 04:07:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 04:07:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-29 04:07:07,438 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 39 [2020-10-29 04:07:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:07,439 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-29 04:07:07,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:07:07,439 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-29 04:07:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 04:07:07,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:07,442 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:07,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:07:07,443 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash -544069207, now seen corresponding path program 1 times [2020-10-29 04:07:07,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:07,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439923158] [2020-10-29 04:07:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:09,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:12,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 04:07:12,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 04:07:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:12,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:12,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:12,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 04:07:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:12,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:12,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:12,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:07:12,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:12,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:07:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:12,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:07:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:12,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:12,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:12,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:12,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:12,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:12,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:07:12,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439923158] [2020-10-29 04:07:12,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:12,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:07:12,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023852065] [2020-10-29 04:07:12,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:07:12,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:07:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:07:12,621 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 9 states. [2020-10-29 04:07:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:12,905 INFO L93 Difference]: Finished difference Result 130 states and 159 transitions. [2020-10-29 04:07:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:07:12,906 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-29 04:07:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:12,909 INFO L225 Difference]: With dead ends: 130 [2020-10-29 04:07:12,909 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 04:07:12,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:07:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 04:07:12,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2020-10-29 04:07:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:07:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-29 04:07:12,930 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 42 [2020-10-29 04:07:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:12,931 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-29 04:07:12,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:07:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-29 04:07:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 04:07:12,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:12,935 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:12,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:07:12,936 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:12,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:12,936 INFO L82 PathProgramCache]: Analyzing trace with hash -731649529, now seen corresponding path program 2 times [2020-10-29 04:07:12,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:12,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767751890] [2020-10-29 04:07:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:07:17,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:07:17,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:07:17,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:07:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:07:17,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:07:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:18,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:18,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:18,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:18,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:18,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:18,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 04:07:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:18,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:07:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:07:18,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:18,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:18,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:07:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:18,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:18,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:07:18,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:18,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:07:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:07:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:07:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:07:18,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767751890] [2020-10-29 04:07:18,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:18,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:07:18,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309992935] [2020-10-29 04:07:18,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:07:18,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:18,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:07:18,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:07:18,178 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 11 states. [2020-10-29 04:07:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:18,454 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2020-10-29 04:07:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:07:18,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-29 04:07:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:18,457 INFO L225 Difference]: With dead ends: 102 [2020-10-29 04:07:18,457 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 04:07:18,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:07:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 04:07:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-29 04:07:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 04:07:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-29 04:07:18,478 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 45 [2020-10-29 04:07:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:18,479 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-29 04:07:18,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:07:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-29 04:07:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 04:07:18,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:18,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:18,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:07:18,484 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash -340564633, now seen corresponding path program 1 times [2020-10-29 04:07:18,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:18,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720578253] [2020-10-29 04:07:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:18,502 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-29 04:07:18,502 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-29 04:07:18,503 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 04:07:18,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:07:18,533 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-29 04:07:18,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:07:18 BoogieIcfgContainer [2020-10-29 04:07:18,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 04:07:18,540 INFO L168 Benchmark]: Toolchain (without parser) took 25905.80 ms. Allocated memory was 161.5 MB in the beginning and 363.9 MB in the end (delta: 202.4 MB). Free memory was 136.9 MB in the beginning and 268.6 MB in the end (delta: -131.8 MB). Peak memory consumption was 71.2 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:18,541 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 134.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 04:07:18,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.21 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 126.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:18,549 INFO L168 Benchmark]: Boogie Preprocessor took 37.69 ms. Allocated memory is still 161.5 MB. Free memory was 126.9 MB in the beginning and 125.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:18,550 INFO L168 Benchmark]: RCFGBuilder took 625.28 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 144.6 MB in the end (delta: -19.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:18,550 INFO L168 Benchmark]: TraceAbstraction took 24974.49 ms. Allocated memory was 161.5 MB in the beginning and 363.9 MB in the end (delta: 202.4 MB). Free memory was 144.3 MB in the beginning and 268.6 MB in the end (delta: -124.3 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:18,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 134.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.21 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 126.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.69 ms. Allocated memory is still 161.5 MB. Free memory was 126.9 MB in the beginning and 125.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 625.28 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 144.6 MB in the end (delta: -19.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24974.49 ms. Allocated memory was 161.5 MB in the beginning and 363.9 MB in the end (delta: 202.4 MB). Free memory was 144.3 MB in the beginning and 268.6 MB in the end (delta: -124.3 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L6] int N = 1000000; [L8] int i,j=0,a[N]; [L9] unsigned int R=4; [L10] i=0 [L10] COND TRUE iN/2) [L10] i++ [L10] COND TRUE iN/2) [L10] i++ [L10] COND TRUE iN/2 [L13] a[i]=i%R [L10] i++ [L10] COND FALSE !(i